/*css classes used also by pages & blocks-----------------------------------*/
.div_spacing { height:10px; line-height:10px; }

/*css classes used only in layout-------------------------------------------*/
.div_wrapper_wh { width:900px; margin-left:auto; margin-right:auto; }

.div_header_wh { 
  border:skyblue 0px solid; margin-top:20px; text-align:left; 
  font-weight:bold; margin-left:auto; margin-right:auto;
}
.div_menu_wh { 
  border:red 0px solid; text-align:left; width:900px; margin-left:auto; 
  margin-right:auto;
}
.div_content_wh { 
  border:red 0px solid; text-align:left; width:900px; margin-left:auto; 
  margin-right:auto;
}
.tbl_content_wh { width:900px; }
.td_content_left_wh { width:220px; border:red 0px solid; }
.td_content_center_wh { width:10px; border:red 0px solid; }
.td_content_right_wh { width:670px; border:red 0px solid; }
.div_page_wh {}

.div_footer_wh { 
  text-align:left; width:900px; margin-left:auto; 
  margin-right:auto; margin-bottom:100px;
}